Process of making a dense stable composition containing alkali peroxid.



iammnb Tito MANN, primes; SWITZERLAND...

rnoonss or ,MAKING A DENS'ES'IABLE COMPOSITION CONTAINING 4mm Pniioxin.

R Drawing.

To all whom it mag concern:

Be it known that 1, Emma) TIIOM'ANN, a citizen of the Swiss Confederation, and resident of Zurich, Switzerland, have invented 5 certain new and .ise-tul I llIPL'OVUI'HQIltS in Proeessesot' Making a Dense Stable Composition Containing Alkal :Ieroxid, of which tliefol'lowing is a specification.

-lt has often been proposed to utilize the oxidizing qualities of the alkali peroxids. ()ne of the principal applications of these oxidizing-substances is to use them as a washing powder-in combination with soap. There are however great ineoi' venienees connected with this application owing not;- only to the hygroscopic properties of the peroxids but also owing to their -apid decom position when brought in Contact with the water and owing to the inflanimability'of any organic jii'iatter which should come in intimate contact with the same. To ol'iriate' these inconveniences it has been proposed to store a measured quantity of peroxid in an air tight compartment arranged in the packet of soap powder so that this peroxid comes in contact with the soap only at the moment when the box is destroyed so that. its contents may be used. There lltH'th'fllt'llllfil' been made caltridges filled with peroxid and. embedded in soap powder. 'lhe cartridges are ol' a material which partly or completely melts as soon as it: comes in. contact with the water, particularly with hot; water, so that the contents of the nitride-es flow out when the lye 6 is being, prepared. .lt is obvious that thus considerable quantities of active oxygen'are lostowing to the rapid decomposition of the peroxid:

This invention relates to a process l'or the manufacture of a dense stable composition containing alkali peroxid which can be ex- "posed to the nioistness ol the air, or be brought in contact with organic matter with out anydangero'l der-ompositioia. With this object in viiew alter the li|()l; :lllit: substances have been melted, an alkali peroxidis admixed with the same so that alter cooling the said mixture forms a compact and rather heavy-mass. This mass, it put in water,

I "regularly emitS liydroilen hero-K T the slow dissolution o'l' its elenu-nts and as no local excessive heating an be prodlu-ed, this composition can l).(.' used without any danger ol. explosion in hot water and even in boiling water. (lonlraey to what happens with the light peroxid inelosed in -arposition of the peroxid.

Specification of Letters Patent. I Patlltd Aug. 15,1911- Applieation filed January 7, 1911. Serial No. 01,383. l

triclges' and which floats upon the water when it gets. ma of the (lilVGl()]), the mass produced acoording to this i'nrentioni'ests always upon the bottom of the bucket so that the gaseous emanations are forced to traverse the liquid entirely before they can escape whereby the absorption of the gases by the water is greatly facilitated. The bleaching liquids thus obtained are well saturated with active oxygenand they are consequently Yer ett'ective.

The improved process can, .ior example, be carried out in the following manners- 12 parts of nitrate of potassium are molten, preferably, on the open fire; it) parts ot an alkali peroxid are added to the molten ni t'ate of potassium under continua-lv stirring so that a quiet fusion of the mass is olitained; the product is poured into molds of convenient shape, to be broken to pieces after it has cooled. The i'nass obtained is whitish, homogeneous, hard and without; pores. Other nitrates can be substituted [01" the nitrate of potassium and compositions of two or more nitrates may be used.

The proportion of peroxid can vary according to. the oxidizing etl'ect, to .be obtained. This proportion can mount up to otlfl ot the linal produetrwithout prejudicmg the perfectv fusibilit and the intimate mixture of the final product.

The product can be wrapped in paper or tissue. The wrapper could be inlpree'natml 'l'oiexample, with an alkali nitrate,- with resin, stearic acid, olein or other organic acids, in order to ell'eet. the dissolution ol the envelop sinuiltimeously with the decomln other cases, where a neutral reaction of the solution is iiulispensablc, the addition of an acidic subsull'ate o'l' aluminium, boric acid and the like is ell'eot'ed by plunging the composition into molten nitrate to which one of the here.

inliel'ore'mentioned acid'substanres has been -ireviousl y added, said molten nitrate. torming a coating.

The new pro ess not only serves For pre paring an clliracious sulislaluie to be used with washing imwder, but further for pre paring a. substaiuzo which is adapted to act as an oxidizing reagent upon any materials in solution or in aqueous suspension.

lv elaiinz 1. An improved process of n|anul"acturinn a heavy mass comprising an alkali slant-e, 'lor example bisull ate ol" potassiunu peroxid in unalterable form serving for melting 12 parts of nitrate of potassium, in-

admixing with the same 10 parts of an alkali peroxid under continuous stirring, in leaving the mixture to cool and in breaking up in pieces the hard dense mass obtainedr 3. An improved process of the manufacture of a heavy mass comprising an alkali peroxid in unalterable form, consisting in melting with t e same 10 parts of an alkali eroxid 12 parts of a nitrate then admixing v under continuous stirrin in leaving the mixture to cool, in brea ing the mass to pieces and in coating the pieces with a solu tion containing substances capableof neutralizing the alkali, substantially as described and shown and for the purpose set ,forth.

In witness whereof I have hereunto "set my hand in thepresence of two witnesses. EDUARD THOMANN.

Witnesses: AR'r-HUR J. Bunny,

AUGIZST RI'FEGG. 

